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Finding the Fourth Proportional to 151,355.77, 208,829.39 and 105,363.87

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Solution

The fourth proportional to 151,355.77, 208,829.39 and 105,363.87 is: 145,373.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,355.77 : 208,829.39 = 105,363.87 : x
  2. Step 2: Convert to fraction form
    151,355.77/208,829.39 = 105,363.87/x
  3. Step 3: Cross multiply
    151,355.77x = 208,829.39 × 105,363.87
  4. Step 4: Simplify right side
    151,355.77x = 22,003,072,441.48
  5. Step 5: Solve for x
    x = 22,003,072,441.48/151,355.77
  6. Step 6: Final answer
    x = 145,373.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.